CN115424420A - Circuit breaker switching-on times statistics and early warning device - Google Patents
Circuit breaker switching-on times statistics and early warning device Download PDFInfo
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- CN115424420A CN115424420A CN202210848112.7A CN202210848112A CN115424420A CN 115424420 A CN115424420 A CN 115424420A CN 202210848112 A CN202210848112 A CN 202210848112A CN 115424420 A CN115424420 A CN 115424420A
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Abstract
The invention relates to the technical field of circuit breaker monitoring, in particular to a circuit breaker switching-on frequency counting and early warning device which comprises a main controller, a signal acquisition module, an early warning module and a power supply module, wherein the main controller is respectively connected with the signal acquisition module, the early warning module and the power supply module; the input end of the signal acquisition module is connected with the circuit breaker, and the output end of the signal acquisition module is connected with the main controller; the signal acquisition module is used for acquiring signals and inputting the signals to the main controller, and the early warning module is used for receiving alarm signals sent by the main controller and triggering alarm. The invention can monitor and record the switching times of the circuit breaker in real time, effectively track the state change of the circuit breaker in time, and send out an alarm signal to remind workers to process the circuit breaker in time when the switching times of the circuit breaker reaches or exceeds an early warning threshold value, thereby effectively reducing the occurrence of switching-on failure accidents of the circuit breaker and being beneficial to improving the stability and the safety of power supply.
Description
Technical Field
The invention relates to the technical field of circuit breaker monitoring, in particular to a circuit breaker closing time counting and early warning device.
Background
The stability and reliability of the operation of a circuit breaker in the power system are very important to the whole power system, the closing failure of the circuit breaker is a common fault in the operation of electrical equipment, and if the circuit breaker is not properly processed by workers, the circuit breaker often delays the power transmission time, causes large-area power failure and causes great loss to industrial and agricultural production.
The reasons for the failure of the circuit breaker to close the circuit are manifold. The method is inappropriate when the breaker is closed, the voltage quality of a closing bus cannot meet the requirement, the control loop is broken, mechanical faults and the like, but the two reasons are summarized, namely, the electrical secondary loop fault, and the mechanical faults of a breaker and an operating mechanism.
In the field operation and maintenance process, workers find that the long service time of the circuit breaker and the over-limit opening and closing times of the circuit breaker are one of main reasons for the closing failure of the circuit breaker, and if the circuit breaker is not timely processed, the stability and the safety of power supply can be influenced. In fact, the actual opening and closing times of the circuit breaker cannot be known, the life cycle of the circuit breaker is started from commissioning to damage, namely, the circuit breaker can be replaced only after being damaged, and unnecessary loss is caused frequently. Therefore, a circuit breaker closing frequency counting and early warning device is provided.
Disclosure of Invention
The invention provides a device for counting and early warning the switching-on times of a circuit breaker, overcomes the defects of the prior art, and can effectively solve the problem that the actual switching-on and switching-off times of the circuit breaker cannot be known.
The technical scheme of the invention is realized by the following measures: a circuit breaker switching-on frequency counting and early warning device comprises a main controller, a signal acquisition module, an early warning module and a power module, wherein the main controller is respectively connected with the signal acquisition module, the early warning module and the power module; the input end of the signal acquisition module is connected with the circuit breaker, and the output end of the signal acquisition module is connected with the main controller; the signal acquisition module is used for acquiring signals and inputting the signals to the main controller, and the early warning module is used for receiving alarm signals sent by the main controller and triggering alarm.
The following is further optimization or/and improvement of the technical scheme of the invention:
the early warning module can be a sounding alarm and/or a luminous alarm.
The system also comprises a storage module, and the storage module is connected with the main controller.
The system also comprises a display module, and the display module is connected with the main controller.
The system also comprises a communication module and terminal equipment, wherein the terminal equipment is connected with the main controller through the communication module.
The terminal equipment can be at least one of a mobile phone, a tablet computer, an industrial control computer, a DCS or a power supply monitoring system.
The communication module can support at least one of wired network communication, wireless network communication and serial port communication.
The device also comprises an alternating current sensor, wherein the alternating current sensor is provided with at least one group of normally open contacts, and the normally open contacts are connected with the input end of the signal acquisition module.
The alternating current sensor can be provided with three groups of normally open contacts which are respectively connected to the input end of the signal acquisition module.
The invention can monitor and record the switching times of the circuit breaker in real time, effectively track the state change of the circuit breaker in time, and send out an alarm signal to remind workers to process the circuit breaker in time when the switching times of the circuit breaker reaches or exceeds an early warning threshold value, thereby effectively reducing the occurrence of switching-on failure accidents of the circuit breaker and being beneficial to improving the stability and the safety of power supply.
Drawings
FIG. 1 is a schematic diagram of the hardware configuration of the present invention.
Fig. 2 is a schematic diagram of the connection between the signal acquisition module and the circuit breaker according to the present invention.
Fig. 3 is a schematic diagram of the connection between the signal acquisition module of the present invention and an ac sensor having a set of normally open contacts.
Fig. 4 is a schematic diagram of the connection between the signal acquisition module and an ac sensor with three sets of normally open contacts according to the present invention.
The codes in the figures are respectively: the intelligent power supply comprises a circuit breaker 1, a main controller 2, a signal acquisition module 3, an early warning module 4, a power module 5, a storage module 6, a display module 7, a communication module 8, a terminal device 9 and an alternating current sensor 10.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention is further described with reference to the following examples and figures:
example 1: as shown in the attached figures 1 and 2, the circuit breaker closing times counting and early warning device comprises a main controller 2, a signal acquisition module 3, an early warning module 4 and a power supply module 5, the main controller 2 is respectively connected with the signal acquisition module 3, the early warning module 4 and the power module 5. The signal acquisition module is used for acquiring signals and inputting the signals to the main controller, and the early warning module is used for receiving alarm signals sent by the main controller and triggering alarm. The power module 5 provides a working power supply for the device, supports AC220V or DC48V power supply, and the signal acquisition module 3 can support 8-path switching value signal acquisition. The input of signal acquisition module 3 is connected with one of them a set of normally open contact and one of them a set of normally closed contact of circuit breaker, and the output of signal acquisition module 3 is connected with main control unit 2. The signal acquisition module 3 acquires switching value signals of normally open contacts and normally closed contacts of the circuit breaker and inputs the switching value signals to the main controller 2. The main controller 2 processes and analyzes the received switching value signal, monitors and records switching data of the circuit breaker 1 in real time, wherein the switching data comprise accumulated switching times of the circuit breaker 1, and when the accumulated switching times reach or exceed a preset early warning threshold value, the main controller 2 sends a signal to the early warning module 4 to trigger warning. The time of switching on and switching off can also be recorded, namely the switching on and switching off data can also comprise the time of switching on and switching off. For medium and large-sized circuit breakers 1, normally open and normally closed auxiliary contacts are generally provided, and the auxiliary contacts can be connected to a control circuit for displaying the on/off state of the circuit breaker 1. When the circuit breaker 1 is switched on, the normally open contact is closed, and the normally closed contact is opened. When the breaker 1 is opened, the normally open contact is opened, and the normally closed contact is closed. The main controller 2 can judge the opening and closing state of the circuit breaker 1 through the change of the states of the normally open contact and the normally closed contact of the circuit breaker, and count the opening and closing times. When the opening and closing times of the circuit breaker 1 are calculated in an accumulated mode, a group of normally open contacts and a group of normally closed contacts of the circuit breaker are combined to serve as input signals for closing and opening to trigger counting. After the circuit breaker 1 completes switching-on and switching-off actions once respectively, counting is performed once.
But through setting up like this real-time supervision and record circuit breaker 1's the floodgate number of times that opens and shuts, in time trail circuit breaker 1's state change effectively, when circuit breaker 1's the floodgate number of times that opens and shuts reached or surpassed the early warning threshold value, send alarm signal in order to remind the staff in time to handle circuit breaker 1, can reduce the emergence of circuit breaker 1 combined floodgate malfunction accident effectively, be favorable to improving the stability and the security of power supply.
Preferably, the master controller 2 is an STM32 module. The STM32 module adopts the STM32H753 chip of Cortex-M7 kernel as main control unit, and STM32H753 chip has the MCU of super high performance, has the advance in the aspect of system design, and its work dominant frequency can reach 400MHz, supports floating point number and handles, and the interface is abundant, can satisfy the data acquisition storage requirement. The STM32 is used for controlling, displaying and managing data, communicates with the liquid crystal screen through the serial port in a private protocol mode, uploads data to the liquid crystal screen, and uploads data to the terminal device 9 through the ethernet port. By this arrangement, high-speed data acquisition and application can be realized. Of course, the main controller 2 may also be other types of controllers, such as a single chip microcomputer, a programmable controller, and the like.
The early warning module 4 is a sounding alarm and/or a luminous alarm. The early warning module 4 can be a sound alarm or a light alarm, and can also be an audible and visual alarm, and can better remind workers to process in time through the setting.
After the device is powered on, the device enters a working state, and the main controller 2 monitors the state of the circuit breaker 1. When the tested breaker 1 is in an opening and closing state, the main controller 2 records the collected information of the opening and closing time, the times and the like, and stores the information in the storage module 6 after processing. When the switching frequency of the circuit breaker 1 reaches or exceeds the early warning threshold value, the device can send out early warning information.
According to actual needs, the circuit breaker closing times statistics and early warning device can be further optimized or/and improved:
example 2: as shown in fig. 1 and 2, the circuit breaker closing time counting and early warning device further comprises a storage module 6, the storage module 6 is connected with the main controller 2, and the storage module 6 receives and stores opening and closing data sent by the main controller 2. The data can be effectively and timely saved by arranging the storage module 6.
Example 3: as shown in fig. 1 and 2, the circuit breaker closing time counting and early warning device further comprises a display module 7, the display module 7 is connected with the main controller 2, and the display module 7 receives and displays the opening and closing data sent by the main controller 2. The display module 7 is preferably a 2-inch LCD liquid crystal screen. The display module 7 can be arranged to more conveniently display the information such as the time and the times of switching on and switching off.
Example 4: as shown in fig. 1 and 2, the circuit breaker closing times counting and early warning device further comprises a communication module 8 and a terminal device 9, the terminal device 9 is connected with the main controller 2 through the communication module 8, and the terminal device 9 receives, stores and displays opening and closing data sent by the main controller 2. Through being connected with terminal equipment 9, can look over the statistical form, the operation trend of circuit breaker 1 switching on and off data. The terminal device 9 may be at least one of a mobile phone, a tablet computer, an industrial control computer, a DCS, a power supply monitoring system, or the like, and by being connected to these devices, the switching data and the related breaker state information can be displayed on these devices. The communication module 8 supports at least one of wired network communication, wireless network communication, and serial port communication. The remote alarm push function of mails, short messages and the like can be conveniently realized by the arrangement. The wired network communication can be RJ45 network port, the wireless network communication can be 2G, 3G, 4G or 5G wireless data communication, and the serial port communication can be RS485 serial port communication.
Example 5: as shown in fig. 1, 2, 3 and 4, the circuit breaker closing times counting and early warning device further comprises an alternating current sensor 10, wherein the alternating current sensor 10 is provided with at least one group of normally open contacts, and the normally open contacts are connected with the input end of the signal acquisition module 3. The alternating current sensor 10 is arranged on the incoming line side or the outgoing line side of the circuit breaker 1, can detect the current of the circuit breaker, and triggers the switch device to act when the current is higher than a set upper limit value, so that a normally open contact of the circuit breaker is closed. The AC sensor 10 can be a 0-30A adjustable, anti-saturation, high precision package. The signal acquisition module 3 acquires a switching value signal of a normally open contact of the alternating current sensor and inputs the switching value signal to the main controller 2. The main controller 2 processes and analyzes the received switching value signals, short circuit on-off data of the circuit breaker 1 are monitored and recorded in real time, the short circuit on-off data comprise accumulated short circuit on-off times of the circuit breaker 1, and when the accumulated short circuit on-off times reach or exceed a preset early warning threshold value, the main controller 2 sends signals to the early warning module 4 to trigger warning. The time of the short circuit trip may also be recorded, i.e. the short circuit disconnect data may also include the time of the short circuit trip.
Compared with normal opening and closing, the short-circuit tripping has larger danger to the circuit breaker 1. Therefore, the short circuit tripping times of the circuit breaker 1 can be monitored and recorded in real time through the setting, when the short circuit tripping times of the circuit breaker 1 reach or exceed the early warning threshold value, an alarm signal is sent to remind a worker to process the circuit breaker 1 in time, so that the circuit breaker is distinguished from a normal opening and closing operation, and the power supply stability and the accident prevention are further improved. After the device is electrified, the device enters a working state, and the signal acquisition module 3 acquires a switching value signal of a normally open contact of the alternating current sensor and monitors the state of the circuit breaker 1. When faults such as short-circuit tripping occur on the circuit of the tested circuit breaker 1, instantaneous current of the whole circuit is greatly increased, so that the alternating current sensor 10 is triggered to act, the normally open contact of the alternating current sensor 10 is closed, and the main controller 2 can judge whether the circuit breaker 1 is in short-circuit tripping or not through the change of the state of the normally open contact of the alternating current sensor 10, so that the circuit breaker 1 is distinguished from normal switching on and off. The main controller 2 records the time, frequency and other information of the short circuit trip, and stores the information in the storage module 6 after processing. When the short circuit trip times of the circuit breaker 1 reach or exceed the preset early warning threshold value, the device can send out early warning information.
For the circuit breaker of the three-phase integrated mechanism, the alternating current sensor 10 only needs to provide a group of normally open contacts, and the normally open contacts are combined with the group of normally open contacts of the circuit breaker 1 and used as input signals for opening and closing to trigger counting. For the split-phase circuit breaker, in order to ensure the power supply continuity of the power transmission line, short-time non-full-phase operation is allowed, namely when a single-phase instantaneous short-circuit fault occurs, other two phases still normally operate in the process of protecting and removing the fault. For accurate counting, the ac sensor 10 needs to provide three sets of normally open contacts, which are combined with the normally open contacts of the phase splitting mechanism of the circuit breaker 1 to respectively trigger counting as input signals. In this case, therefore, the ac sensor 10 is provided with three sets of normally open contacts, each connected to an input of the signal acquisition module 3. Through the arrangement, the device is suitable for the split-phase circuit breaker, and can still realize accurate counting when a single-phase short-circuit fault occurs to cause any one phase to trip and break and the other two phases run normally.
The technical characteristics form an embodiment of the invention, which has strong adaptability and implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (9)
1. A circuit breaker switching-on times counting and early warning device is characterized by comprising a main controller, a signal acquisition module, an early warning module and a power supply module, the main controller is respectively connected with the signal acquisition module, the early warning module and the power supply module; the input end of the signal acquisition module is connected with the circuit breaker, and the output end of the signal acquisition module is connected with the main controller; the signal acquisition module is used for acquiring signals and inputting the signals to the main controller, and the early warning module is used for receiving alarm signals sent by the main controller and triggering alarm.
2. The statistics and early warning device for the closing times of the circuit breaker according to claim 1, wherein the early warning module is a sound alarm and/or a light alarm.
3. The circuit breaker closing times counting and early warning device according to claim 1 or 2, characterized by further comprising a storage module, wherein the storage module is connected with the main controller.
4. The circuit breaker closing times counting and early warning device according to claim 1 or 2, further comprising a display module, wherein the display module is connected with the main controller.
5. The circuit breaker closing times counting and early warning device according to claim 1 or 2, characterized by further comprising a communication module and a terminal device, wherein the terminal device is connected with the main controller through the communication module.
6. The statistics and early warning device for the closing times of the circuit breaker according to claim 5, wherein the terminal equipment is at least one of a mobile phone, a tablet computer, an industrial control computer, a DCS or a power supply monitoring system.
7. The statistics and early warning device for the closing times of the circuit breaker according to claim 5, wherein the communication module supports at least one of wired network communication, wireless network communication and serial port communication.
8. The statistics and early warning device for the closing times of the circuit breaker according to claim 1 or 2, further comprising an alternating current sensor, wherein the alternating current sensor is provided with at least one group of normally open contacts, and the normally open contacts are connected with the input end of the signal acquisition module.
9. The statistics and early warning device for the closing times of the circuit breaker according to claim 8, wherein the alternating current sensor is provided with three groups of normally open contacts which are respectively connected to the input end of the signal acquisition module.
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| CN202210848112.7A CN115424420A (en) | 2022-07-19 | 2022-07-19 | Circuit breaker switching-on times statistics and early warning device |
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| CN202210848112.7A CN115424420A (en) | 2022-07-19 | 2022-07-19 | Circuit breaker switching-on times statistics and early warning device |
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| CN216566863U (en) * | 2021-09-23 | 2022-05-20 | 河南平高电气股份有限公司 | High-voltage circuit breaker and locking control system thereof |
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2022
- 2022-07-19 CN CN202210848112.7A patent/CN115424420A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202837496U (en) * | 2012-09-17 | 2013-03-27 | 北京慧智神光科技有限公司 | On-line monitoring system for mechanical property of high-voltage breaker |
| CN103500356A (en) * | 2013-10-12 | 2014-01-08 | 南京欧格节能科技有限公司 | Electronic counter for circuit breakers |
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